Cryotube
From AvP Online Encyclopedia
Cryotube, also known as a cryochamber, these were the capsules used by starship crews on journeys lasting in excess of seven days. Inside one, the person (or animal) is put into stasis, or cryosleep using the chemical, cryocool. Cryotubes were often cylinders, with a clear lids, though later variants on the theme were more like giant technological coffins with a small glass plate over the occupant's face.
These devices are used to stop the negative effect of faster-than-light spacetravel, such as premature aging. Cryotubes are standard on most space faring vessels.
